.box-center{
  display: flex;
  width: 100%;
  height: 100%;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
  align-content: flex-start;
  overflow-y: auto;
  .son{
    cursor: pointer;
    border-radius:5px ;
    margin:10px 10px 0 10px;
    flex-shrink: 0;
    display: flex;
    justify-content: center;
    align-items: center;
  }
  .hide-box{
    visibility: hidden;
  }
}
